128394 has 24 divisors (see below), whose sum is σ = 318240. Its totient is φ = 36648.

The previous prime is 128393. The next prime is 128399. The reversal of 128394 is 493821.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (128393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384 + ... + 635.

It is an arithmetic number, because the mean of its divisors is an integer number (13260).

2¹²⁸³⁹⁴ is an apocalyptic number.

128394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128394 is an abundant number, since it is smaller than the sum of its proper divisors (189846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128394 is a wasteful number, since it uses less digits than its factorization.

128394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 1031 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 128394 is about 358.3210850620. The cubic root of 128394 is about 50.4484982902.

The spelling of 128394 in words is "one hundred twenty-eight thousand, three hundred ninety-four".